Electrochemical deposition of platinum nanoparticles on different carbon supports and conducting polymers

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Title: Electrochemical deposition of platinum nanoparticles on different carbon supports and conducting polymers
Authors: Domínguez Domínguez, Sonia | Arias Pardilla, Joaquín | Berenguer-Murcia, Ángel | Morallon, Emilia | Cazorla-Amorós, Diego
Research Group/s: Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medioambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Carbon supports | Conducting polymers | Electrodeposition | Platinum | Electrocatalysis
Knowledge Area: Química Física
Date Created: 2007
Issue Date: Feb-2008
Publisher: Springer Netherlands
Citation: DOMÍNGUEZ DOMÍNGUEZ, Sonia, et al. “Electrochemical deposition of platinum nanoparticles on different carbon supports and conducting polymers”. Journal of Applied Electrochemistry. Vol. 38, No. 2 (Febr. 2008). ISSN 0021-891X, pp. 259-268
Abstract: Electrodeposition of Pt nanoparticles under potentiostatic conditions was performed on several types of carbon electrode supports: commercial macroporous carbon (a three-dimensional electrode), glassy carbon and graphite. Conducting polymers (poly-aniline and poly-oaminophenol) were also used. The platinum nanoparticles were obtained by different Potential Step Deposition (PSD) methods in 5 mM H2PtCl6 + 0.5 M H2SO4 aqueous solutions. The effect of the final potential, time and number of steps on the quantity, distribution and size of the platinum nanoparticles was analysed. The mechanism of the electrochemical deposition of platinum was studied through the application of theoretical modelling. The progressive nucleation mechanism provided the closest agreement with the results obtained. In addition, the chemical state and morphology of the electrodeposited materials were determined by means of SEM, TEM and XPS. The results show that the carbon material structure has a strong influence on the Pt particle structure and this, in turn, affects the catalytic activity.
Sponsor: Spanish Ministerio de Educación y Ciencia (Projects CTQ2006-08958/PPQ and MAT2004-1479) and the EU (FEDER).
URI: http://hdl.handle.net/10045/10477
ISSN: 0021-891X (Print) | 1572-8838 (Online)
DOI: 10.1007/s10800-007-9435-9
Language: eng
Type: info:eu-repo/semantics/article
Rights: The original publication is available at www.springerlink.com
Peer Review: si
Publisher version: http://dx.doi.org/10.1007/s10800-007-9435-9
Appears in Collections:INV - GEPE - Artículos de Revistas
INV - MCMA - Artículos de Revistas

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